First published in Astounding Science Fiction, September 1945.
One of the complaints in the article that inspired this series was the increasing influence of fantasy. Either the stories were fantasies dressed up in SF garb, or SF stories borrowing the language and structure of fantasy. I think this style of ‘historical SF’ is a variation on this approach.
There seems to be something similar going on. It’s an attempt to de-culture some of the standard SF baggage. So, an alien becomes a demon, technological vocabulary becomes words of power and technological processes become magical rituals.
More importantly, the historical variation is a chance to write about the silly past people and to remind ourselves that we’ll past people one day, too.